Table top cleaner

ABSTRACT

A cleaner comprising a casing in which cells and an electric motor are placed, a fan chamber disposed at a lower end of the casing and formed with openings in side walls in which a downwardly directed fan is mounted, and a dust collecting chamber detachably attached to a lower end of the fan chamber. The dust collecting chamber is formed in its central portion with a dust drawing orifice, a filter is arranged inside the fan chamber and juxtaposed to the openings, and a dust guide plate is provided at the bottom of the fan chamber. Small and other particles of dust drawn by suction through the dust drawing orifice are collected in the dust collecting chamber by the filter means and the guide plate.

United States Patent [191 Morinaga TABLE TOP CLEANER [75] Inventor:Kikuo Morinaga, Tokyo, Japan [73] Assignee: Jujo Central Co., Ltd.,Japan [22] Filed: Oct. 31, 1973 21 Appl. No.: 411,276 1 [4 1 Sept. 9,1975 Primary ExuminerPeter Feldman Assistant ExaminerC. K. MooreAttorney, Agent, or Firm-I-Iill, Gross, Simpson, Van Santen, Steadman,Chiara & Simpson 5 7] ABSTRACT A cleaner comprising a casing in whichcells and an electric motor are placed, a fan chamber disposed at alower end of the casing and formed with openings in side walls in whicha downwardly directed fan is mounted, and a dust collecting chamberdetachably attached to a lower end of the fan chamber. The dustcollecting chamber is formed in its central portion with a dust drawingorifice, a filter is arranged inside the fan chamber and juxtaposed tothe openings, and a dust guide plate is provided at the bottom of thefan chamber. Small and other particles of dust drawn by suction throughthe dust drawing orifice are collected in the dust collecting chamber bythe filter means and the guide plate.

1 Claim, 6 Drawing Figures PATENTEU SEP 1975 SHEET 2 [IF 3 FIG.3

PATENTEDSEP ms sumaqm FIG. 5

TABLE TOP CLEANER BACKGROUND OF THE INVENTION This invention relates tocleaners, and more particularly it is concerned with a small table topcleaner.

Small cleaners of the prior art adapted for cleaning the top of a tableand the like have disadvantages in that they are not easy to handle andthe hands of the operator tend to be soiled by the collected dust.Besides, the operator is required to hold the cleaner, by hand at alltimes when it is desired to use it.

SUMMARY OF THE INVENTION An object of the invention is to provide asmall table top cleaner obviating the aforementioned disadvantages ofthe prior art which permits small particles of dust to be collected anddischarged from the cleaner readily and positively without soiling thehands of the operator.

Another object of the invention is to provide a small table top cleanerwhich eliminates the need for the operator to hold the cleaner by handduring operation and which can be operated while left standing on thetop of a table and the like, with the operator being required merely tomove the cleaner along the top of the table.

Other and additional objects and features of the invention will becomeevident from the description set forth hereinafter when considered inconjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of the tabletop cleaner accord ing to the invention;

FIG. 2 is a vertical sectional view taken along the line "-11 of FIG. 1;

FIG. 3 is a vertical sectional side view taken along the line Ill-IlI ofFIG. 2;

FIG. Al is a plan view of the guide plate;

FIG. 5 is a vertical sectional side view of the fan chamber showing thefilter; and

FIG. 6 is a bottom view of the dust collecting chamber.

DESCRIPTION OF A PREFERRED EMBODIMENT The Table top cleaner according tothe invention comprises a casing 3 in which cells I and a small electricmotor 2 rotated by the power supplied from the cells I are placed, a fanchamber 6 disposed at a lower end of the casing 3 and formed withopenings 13in side walls, and a dust collecting chamber 8 disposed atthe lower end of the fan chamber 6. The motor 2 has a shaft whichextends vertically downwardly and operatively connected to a suction fan5 rotatably mounted in the fan chamber 6. A filter means 6' is disposedinwardly of the side walls of the fan chamber 6 in which the opening 13are formed, so that the interior of the fan chamber 6 is maintained incommunication with outside through the filter means 6 and openings 13.The filter means 6 comprises an air permeating filter It) juxtaposed tothe openings 13 in side walls of the fan chamber 6 and a guide plate 12disposed at the bottom of the fan chamber 6 for guiding small particlesof dust in their downward movement into the dust collecting chamber 8after such small dust particles are drawn by the fan into the fanchamber 6.

The dust collecting chamber 8 is formed in its central portion with adust drawing passageway 7 which is maintained at its upper end incommunication with the interior of the fan chamber 6 and at its lowerend in contact with the upper surface of a table and the like. Bristles9 are provided at the bottom of the dust collecting chamber 8 andsurround the orifice of the passageway 7. 11 is a switch for the motor2.

In operation, the switch 11 is actuated to operate the suction fan 5while the table top cleaner is placed on the surface of a table.Particles of dust on the table are drawn by suction through thepassageway 7 into the fan chamber 6 and guided by the guide plate 12 tomove into the dust collecting chamber 8 disposed below the fan chamber6. Thus the dust collected can be held in the dust collecting chamberwithout requiring to use a bag or the like. The air introduced into thefan chamber 6 together with the drawn dust is discharged to outsidethrough the filter 10 and the openings 13 in the side walls of the fanchamber 6, with the dust particles kept from being discharged to outsideby the filter l0 and moving downwardly into the dust collecting chamber8 without staying in the fan chamber 6. The dust particles are collectedin the dust collecting chamber 8 and said dust particles do not continueto be in the fan chamber 6, so that the filter 10 is prevented frombeing obturated by said dust particles. Thus, the dust drawingcapability of the fan is not reduced even in a case of extended use. Thetable top cleaner according to the invention is easy to handle becauseit can be moved by hand while placed on the surface of a table.

When the dust collecting chamber 8 is filled with dust, the chamber 8can readily be detached from the fan chamber 6 to dump the collecteddust particles somewhere. The dust collecting chamber 8 may bethreadably or otherwise connected to the fan chamber What I claim is:

1. A table top cleaner comprising a casing in which an electric motorand dry cells for operating same are placed, a fan chamber disposedintermediate the upper and lower ends of said casing and formed withopenings in the peripheral walls of said casing and extending aroundsubstantially the entire periphery, said fan chamber having mountedtherein a suction fan facing downwardly and connected to a shaft of saidelectric motor, a dust collecting chamber for collecting thereinparticles of dust drawn by said suction fan and introduced into the fanchamber through a dust drawing passageway extending through said dustcollecting chamber, and a filter means comprising a filter disposedaround the periphery of said fan chamber and juxtaposed to said openingsin said peripheral walls, said openings being disposed outwardly of saidfilter, said dust collecting chamber being disposed at the lower end ofthe casing, and bristles arranged around the intake orifice of said dustdrawing passageway.

1. A table top cleaner comprising a casing in which an electric motorand dry cells for operating same are placed, a fan chamber disposedintermediate the upper and lower ends of said casing and formed withopenings in the peripheral walls of said casing and extending aroundsubstantially the entire periphery, said fan chamber having mountedtherein a suction fan facing downwardly and connected to a shaft of saidelectric motor, a dust collecting chamber for collecting thereinparticles of dust drawn by said suction fan and introduced into the fanchamber through a dust drawing passageway extending through said dustcollecting chamber, and a filter means comprising a filter disposedaround the periphery of said fan chamber and juxtaposed to said openingsin said peripheral walls, said openings being disposed outwardly of saidfilter, said dust collecting chamber being disposed at the lower end ofthe casing, and bristles arranged around the intake orifice of said dustdrawing passageway.